In The God Delusion, Richard Dawkins gives, but runs together, two criticisms of the argument from design. One is evolutionary and scientific; the other is a philosophical infinite regress argument. Disentangling them makes Dawkins' views clearer. The regress relies on the premiss that a designer must be more complex than the thing designed. I offer two comments about theists who might accept the regress, citing God's infinity. These comments defend Dawkins: but only by making him, when using his regress argument, an atheist who knows (if his “complexity” premiss holds) that God cannot exist.